CVE-2026-64371
Several vulnerabilities have been discovered in the Linux kernel that may lead to a privilege escalation, denial of service or information leaks. https://security-tracker.debian.org/tracker/DSA-6405-1
CSIRTS triage
- What
- The ptrace_may_access() function is not properly protected.
- Who is affected
- Deployments using the proc filesystem.
- Urgency
- Remediation is necessary to ensure proper access control, though no exploitation is reported.
- Action
- Apply the latest patches for the proc subsystem.
AI-assisted analysis generated from the source advisory — verify against the original.
⚡ Watch CVE-2026-64371
Get an email if CVE-2026-64371 is added to CISA KEV, gains public exploit code, or a new advisory cites it — max one per day, one-click unsubscribe.
Exploitation outlook
- Low exploitation risk0.18% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 7% of all EPSS-scored CVEs.
Advisory coverage (3)
- unknownDSA-6405-1 linux - security updatedebian · 2026-07-31
- unknownCVE-2026-64371: In the Linux kernel, the following vulnerability has been resolved: proc: protect ptrace_may_a…nvd · 2026-07-25
- mediumCVE-2026-64371: proc: protect ptrace_may_access() with exec_update_lock (part 1)msrc · 2026-07-14
External references
Embed the live status
— this badge updates automatically when the KEV or exploit status changes. How to embed it →
[](https://www.csirts.com/cve/CVE-2026-64371)